Career
He is known as "The Soda Fountain King". Matthews manufactured carbonating machinery and distributed his product through retail stores. The equipment was a lead-lined cast-iron box where carbonic acid gas was formed by mixing sulphuric acid with marble dust.
The gas was then purified by passing it through water, and then into a tank partially filled with cool water. The tank was rocked for a quarter to a half hour, until the water was impregnated and bubbly. Matthews created a fountain apparatus that could be positioned on a pharmacist’s counter to dispense carbonated drinks, leading to its popularization and rapid growth.
He is buried at Green-Wood Cemetery, Brooklyn, New York. His monument was designed by Karl Muller and cost $30,000.